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SUSE Security Summary Report
Announcement-ID: SUSE-SR:2004:004 Date: Thursday, Dec 16th 2004 12:00 MEST Cross References: <none>
Content of this advisory: 1) solved security vulnerabilities: - file buffer overflow - phprojekt setup.php vulnerability
2) pending vulnerabilities, solutions, workarounds: - Sun and Blackdown Java - new kernel problems - squirrelmail cross site scripting - acroread buffer overflow - phpMyAdmin remote command execution - wget file overwrite problems - multiple php vulnerabilities
3) standard appendix (further information)
1) solved security vulnerabilities
To avoid spamming lists with advisories for every small incident, we will release weekly summary advisories for issues where we have released updates without a full advisory. Since these are minor issues, md5sums and ftp URLs are not included.
Fixed packages for the following incidents are already available on our FTP server and via the YaST Online Update.
A buffer overflow in the handling of ELF executables within the "file" file type detection program was found, which could potentially lead to an attacker executing code within the file process.
All SUSE Linux based products are affected.
PHProjekt contains a vulnerability in setup.php which allows a remote attacker to change the configuration of the groupware.
All SUSE Linux Box products are affected.
2) Pending vulnerabilities in SUSE Distributions and Workarounds:
- Sun Java Plugin
A privilege escalation problem was found in the Sun Java Plugin which could have a remote attacker reading and writing files of a local user browsing websites.
This bug affects all SUSE versions on the Intel x86 and AMD64 / Intel Extended Memory Architecture (EM64T) platforms.
We are in the process of releasing updated Java packages.
Several more problems have been found in the Linux 2.4 and 2.6 kernels:
- A race condition in the unix_dgram_recvmsg() could lead to a local attacker overwriting kernel memory and gain root access. This was reported by Paul Starzetz. This is tracked by the Mitre CVE ID CAN-2004-1068.
- Problems in IGMP ioctl processing can allow a local attacker to crash the machine. This was assigned the Mitre CVE ID CAN-2004-1137.
- A local denial service problem using badly formed ELF executables, where it was possible for a local attacker to crash the machine by using handcrafted ELF binaries.
- An integer overflow in the cmsg handling of sendmsg could lead to a local attacker being able to halt / crash the machine. This was found independently by Paul Starzetz and Georgi Guninski.
- Some more minor issues.
All SUSE Linux based products are affected and we are in the process of preparing updated packages.
A cross site scripting problem was found in squirrelmail. This issue has been assigned Mitre CVE ID CAN-2004-1036.
We are in the process of evaluating affected distributions and preparing updates.
A buffer overflow problem was reported by iDEFENSE Security in the Acrobat Reader for UNIX. We are in the process of preparing updates. Mitre has assigned CVE ID CAN-2004-1152 for this issue.
We are in the process of preparing updates. All SUSE Linux based products are affected.
There is a remote code execution problem in phpMyAdmin. Mitre has assigned CVE IDs CAN-2004-1147 and CAN-2004-1148.
SUSE Linux 9.0, 9.1, 9.2 are affected by this problem.
Multiple file overwrite problem and a directory traversal problem were identified in the wget program, which allows a prepared web server to reply to wget request with data allowing overwriting files, traversing into one directory below the current one, and hidden file overwrite.
All SUSE Linux based products are affected.
The Konqueror web browser allows websites to load web pages into a window or tab currently used by another website. This was reported by Secunia Research.
Mitre has has assigned the CVE ID CAN-2004-1158 to this issue.
All SUSE Linux based products are affected, we are preparing updates for this problem.
Multiple vulnerabilities were found in the php unserialize functionality and other functions by Stefan Esser and others. We are in the process of preparing updated packages.
All SUSE Linux based products are affected.
3) standard appendix: authenticity verification, additional information
- Package authenticity verification:
SUSE update packages are available on many mirror ftp servers all over the world. While this service is being considered valuable and important to the free and open source software community, many users wish to be sure about the origin of the package and its content before installing the package. There are two verification methods that can be used independently from each other to prove the authenticity of a downloaded file or rpm package: 1) md5sums as provided in the (cryptographically signed) announcement. 2) using the internal gpg signatures of the rpm package.
1) execute the command md5sum <name-of-the-file.rpm> after you downloaded the file from a SUSE ftp server or its mirrors. Then, compare the resulting md5sum with the one that is listed in the announcement. Since the announcement containing the checksums is cryptographically signed (usually using the key email@example.com), the checksums show proof of the authenticity of the package. We recommend against subscribing to security lists that cause the e-mail message containing the announcement to be modified so that the signature does not match after transport through the mailing list software. Downsides: You must be able to verify the authenticity of the announcement in the first place. If RPM packages are being rebuilt and a new version of a package is published on the ftp server, all md5 sums for the files are useless.
2) rpm package signatures provide an easy way to verify the authenticity of an rpm package. Use the command rpm -v --checksig <file.rpm> to verify the signature of the package, where <file.rpm> is the file name of the rpm package that you have downloaded. Of course, package authenticity verification can only target an uninstalled rpm package file. Prerequisites: a) gpg is installed b) The package is signed using a certain key. The public part of this key must be installed by the gpg program in the directory ~/.gnupg/ under the user's home directory who performs the signature verification (usually root). You can import the key that is used by SUSE in rpm packages for SUSE Linux by saving this announcement to a file ("announcement.txt") and running the command (do "su -" to be root): gpg --batch; gpg < announcement.txt | gpg --import SUSE Linux distributions version 7.1 and thereafter install the key "firstname.lastname@example.org" upon installation or upgrade, provided that the package gpg is installed. The file containing the public key is placed at the top-level directory of the first CD (pubring.gpg) and at ftp://ftp.suse.com/pub/suse/pubring.gpg-build.suse.de .
- SUSE runs two security mailing lists to which any interested party may subscribe:
email@example.com - general/linux/SUSE security discussion. All SUSE security announcements are sent to this list. To subscribe, send an email to firstname.lastname@example.org.
email@example.com - SUSE's announce-only mailing list. Only SUSE's security announcements are sent to this list. To subscribe, send an email to firstname.lastname@example.org.
For general information or the frequently asked questions (FAQ) send mail to: email@example.com or firstname.lastname@example.org respectively.
===================================================================== SUSE's security contact is email@example.com or firstname.lastname@example.org. The email@example.com public key is listed below. ===================================================================== ______________________________________________________________________________
The information in this advisory may be distributed or reproduced, provided that the advisory is not modified in any way. In particular, it is desired that the clear-text signature shows proof of the authenticity of the text. SUSE Linux AG makes no warranties of any kind whatsoever with respect to the information contained in this security advisory.
Type Bits/KeyID Date User ID pub 2048R/3D25D3D9 1999-03-06 SuSE Security Team firstname.lastname@example.org pub 1024D/9C800ACA 2000-10-19 SuSE Package Signing Key email@example.com
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